1. 1) Bache, D. H. and E. N. Papavasilopoulos (2003). Dewatering of alumino-humic sludge: Impacts of hydroxide. Water Research 37(14): 3289-3298.
2. 2) Bergado, D. T., A. S. Balasubramaniam, R. J. Fannin and R. D. Holtz (2002). Prefabricated vertical drains (pvds) in soft bangkok clay: A case study of the new bangkok international airport project. Canadian Geotechnical Journal 39(2): 304-315.
3. 3) Chih Chao, W., H. Chihpin and D. J. Lee (1997). Effects of polymer dosage on alum sludge dewatering characteristics and physical properties. Colloids and Surfaces A: Physicochemical and Engineering Aspects 122(1–3): 89-96.
4. 4) Chu, J., M. W. Bo and V. Choa (2004). Practical considerations for using vertical drains in soil improvement projects. Geotextiles and Geomembranes 22(1-2): 101-117.
5. 5) Chu, J. and S. W. Yan (2005). Application of the vacuum preloading method in soil improvement projects. Ground improvement - case histories. I. Buddhima and C. Jian, Elsevier. Volume 3: 91-117.